eHam.net - Amateur Radio (Ham Radio) Community

Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net


Reviews Categories | QRP Accessories | MFJ-9214 QRP Wattmeter/Dummy Load 1.8 - 150MHz Help


Reviews Summary for MFJ-9214 QRP Wattmeter/Dummy Load 1.8 - 150MHz
MFJ-9214 QRP Wattmeter/Dummy Load 1.8 - 150MHz Reviews: 1 Average rating: 4.0/5 MSRP: $30
Description: Pocket size instrument to measure Output Power up to 5 watts with a dry
Dummy Load. It has a clear easy to read meter movement and a male BNC. No
battery is necessary.
Product is in production.
More info: http://www.MFJEnterprises.com/Products.php?productID=MFJ-9214
Email Subscription
You are not subscribed to this review.

Subscribe!
My Subscriptions
Subscriptions Help

You can write your own review of the MFJ-9214 QRP Wattmeter/Dummy Load 1.8 - 150MHz.

AF5U Rating: 4/5 May 6, 2016 17:19 Send this review to a friend
In QRP Meetings we check our power   Time owned: 0 to 3 months
I hooked the MFJ-9214 up to my KX1 and checked power on 80, 40, 30, and 20 meters. It showed max on the meter and I know that is not right. So, I opened it up - 8 parts. The calibration pot was adjusted for full sensitivity - MFJ never calibrated it. Oh well, I can do that. So right now you are asking why did I buy this thing. Well, when you go to a QRP meeting we always checked our power. After all low power is what we do. Many of the guys have built wattmeters like the OHR W2. This meter is all you really need plus it has a dummy load (two 1 watts 100 ohms non-inductive resistors). The stock unit is rated at 15 seconds of key down power when using 5 watts. I got out my soldering iron and replaced the stock dummy load with four non-inductive 2 watt resistors from Tanner Electronics here in Dallas. I drew out the schematic and it is almost the same as the MFJ-840 except for one resistor in series with the 1N34A diode. There are two holes in the back of the chassis for calibration - (500K pot & a variable capacitor). The cap is only needed on 2 meters. So, how accurate is this MFJ-9214? Not very but even a Bird is only 5% at full scale. That's not very good really. The OHR W2 is no better. So, why spend a lot of money? It is good for comparing QRP rigs at meetings anyway.
 


If you have any questions, problems, or suggestions about Reviews, please email your Reviews Manager.